package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.mapper.DishMapper;
import com.sky.mapper.DishSetmealMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 套餐业务实现
 */
@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishSetmealMapper dishSetmealMapper;

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

    /**
     * 新增套餐，同时需要保存套餐和菜品的关联关系
     * @param setmealDTO
     */
    @Transactional
    @Override
    public void saveWithDish(SetmealDTO setmealDTO) {
        //先把套餐的基本数据保存起来
        setmealDTO.setStatus(StatusConstant.DISABLE);
        setmealMapper.insert(setmealDTO);
        //然后把套餐的ID赋值给套餐和菜品的关联关系数据
        Long setmealId = setmealDTO.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : setmealDishes) {
            setmealDish.setSetmealId(setmealId);
        }
        //保存套餐和菜品的关联关系数据
        dishSetmealMapper.insertBatch(setmealDishes);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
                setmealMapper.update(setmeal);
    }

    @Override
    public PageResult listPage(SetmealPageQueryDTO setmealPageQueryDTO) {
        Setmeal setmeal = new Setmeal();
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        BeanUtils.copyProperties(setmealPageQueryDTO, setmeal);
        Integer categoryId = setmealPageQueryDTO.getCategoryId();
        if(categoryId != null){
            setmeal.setCategoryId(Long.valueOf(categoryId));
        }
        Page<Setmeal> page = (Page<Setmeal>) setmealMapper.list(setmeal);
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public SetmealVO getById(Long id) {
        SetmealVO setmealVO = setmealMapper.getSetmealById(id);
        List<SetmealDish> setmealDishes = dishSetmealMapper.getDishItemBySetmealId(id);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    @Transactional
    @Override
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.updateSetmealWithoutDisher(setmeal);
        //先把原来的套餐和菜品的关联关系数据删除
        dishSetmealMapper.deleteBySetmealId(setmealDTO.getId());
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : setmealDishes) {
            setmealDish.setSetmealId(setmealDTO.getId());
        }
        dishSetmealMapper.insertBatch(setmealDishes);
    }
}
